Struct MomentumState 

pub struct MomentumState {
    pub velocity_x: f32,
    pub velocity_y: f32,
}

Per-frame simulation state for momentum scrolling.

Fields

velocity_x: f32

velocity_y: f32

Implementations

impl MomentumState

pub fn new() -> Self

pub fn push(&mut self, dx: f32, dy: f32)

Apply a drag delta to velocity (called on pointer move).

pub fn tick(&mut self, physics: ScrollPhysics) -> (f32, f32)

Advance momentum simulation by one frame. Returns (dx, dy) to apply to offset.

pub fn is_settled(&self) -> bool

Returns true when both velocity components are below the stop threshold.

Trait Implementations

impl Default for MomentumState

fn default() -> Self

Returns the “default value” for a type.